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CUTUNG TOOL. APPLlcATlou um) luNE 1o, 1914.

Patented Aug. 22, 1916.

V74@A y W II -f l JOI-IN WLSON BROWN, JR., GF PHILADELPHIA,PENNSYLVANIA.

CUTTING-TOOL Specication of Letters Patent.

resented aeg. aa, raie.

'Application filed .Tune 10,1914. Seria No. 844,298.

v-To ali cti/wm 15 may concern: Y

Be it known that I, JOHN WV. BROWN, Jr., 'a citizen of the lUnitedStates, residing in Philadelphia, Pennsylvania, have invented certainImprovements in Cutting-Tools, of which the following is a specication.

The object of vmy invention is to provide a simple and eiilectivccutting tool in the form of `a disk, so that an extended surface can hecut at each revolution of the tool Without subjecting the mechanism 'toa `severe I strain. This object I attain by mounting the cuttersinaspiiral or other pattern on the cutting plate or disk, so that, asthe plate rotates, one cutter after another will act upon thematerialbeing cut. In the accompanying drawings :wFigure l is ay `front view ofmy improved cutting tool; Fig. 2 is a sectional View onv the iine a-c,Fig. l; Fig. 3 is an enlarged sectional view illustrating` one of thecutters located in the plate; Fig. 4 is a sectional View on the lineb-b, Fig. 3; Fig; 5 is a perspective view o one of the cutters; and Fig.6 is a. per- Vspective view of one of the Wedges used to hold thecutters rigidly in position.

Referring to the drawings 1 is the carrying disk having a series ofsockets,lpre`fer ably arranged in a spiral as shown in Fig. 1. Thiscarrying disk is secured to a plate 2 by screws 3 and has a hub 4 inwhich is an internal screw thread adapted to the threaded end of thespindle. of a lathe or other rotating part. Mounted in each socket is acutter 5 and a wedge The wedge and the cutterl are circular in crosssection,

with the exception that they have one iattened side, and the flattenedside oi' the wedge rests against the flattened side of the cutter,asrlearly shown in Figs. 3 and et. This makes it possible to i'orm thesockets by drilling two holes, one of a greater diameter than theother.The hole ot' smaller diameter is drilled on a taper,

making' the tool very easy to manufact:1re.`

in order to adjust each cutter so that it will project the properdistance beyond the face ot' the'carryingg; disk, l locate a set screw 7back. oi'` each cutter, as `shown in Figs. 2 and El, and this set screwis adapted to the internal threads in. the enlarged holes 8 in thecarrying disk so that, by turning: the screw, the cutter can have moreor less projection. The screws 'Lin the g'iresent instance, nreject intocavities 9 in the plate 2, `Whica are preferably larger than the screws7 or a spiral groove may "be formed in the plate 2 to receivejtheends-of the screws. ln some cases, the screwsmay be so designed that'they will not project 'beyond the carrying disk, thus avoiding thenecessity of cavities or grooves in the plate 2.

ln order that the carrying disk and the plate may be brought into roperalinement, l preferably provide a ange Non the carrying disk,whichoverla-ps the edge of `the plate 2, thustaking" the strain othescrews 3' and insuringfthe proper tting oi' the partst A 4Tiiejlattened edge of the cutters provides a. cutting face and the endof the'lc'utter is slightly beveled and reduced at the sides so as togive the proper clearance.

`As hereinbefore stated, the sockets for the cutters are arranged on aspiral so that one cutter cuts in advance of the one followingit,removing a certain amount of material, and-the succeeding cutter isso arranged as to overlap the path et' the preceding one,

`thus making' a clear and `uninterrupted cut.

By this construction the strain on the' parte of the mechanism and theished is materially reduced.

l `urtherniore, articles havingl ribbed' orA other uneven surfaces, canbe cut with this tool without the liability of shatteringthe ribs orbreaking the cutters, as each cut removes a con'iparatively small widthof material and this material is attached to the main body bypractically only two sides.

1ifhile l have described the cutters as placed in a spiral and this mypreferred form, li do not confine myself to this, but wish to includeany tool built up as described whether the cutters are disposed in aspiral or distributed in any other pattern over the surface.

While l have used the words cutting disk, it will be umlerstood thatthis disk or plate l, can be oi any shape desired, de pending upon thecharacter of the work upon which the tool is to be used and upon thecharacter oi the machine to which the invention is to be applied.

i claim:

l. The-combination in a metal cutting tool, of a disk arranged to berotated; a series of cutters projecting at right angles to the surfaceof said disk andl having flat cutting;1 edges arranged on lines parallelwith lines radiatingu from the center and arranged. at dii'i'erentdistancesirorn the center of ropiece beingiinf, s ma!! tation and soarranged in respect t0 each other that 1 out will be progressively made.

2. The combination in means for fastening cutters to :L carrier, saidcarrier having a tool socket 0f an even diameter throughout; an.inclined Wedge socket at an angle to the socket for the cutter; u toolarranged to fit said socket and having n. iut side; :i Wedge adapted toenter the wedge sor-,liet and also no having u Hat eide resting againstthe flut side of the cutter and .arranged to hol the cutter inpositionin its socket; and means for adjusting the cutterlongitudinally.

n testimony whereof, have Asigned my name to this specific-ation, in thepresence of 15 two subscribing Witnesses.

JOHN WILSON BBOVN, JR. Witnesses:

Jos. H. KLEIN" WM. A. BARR.

